| 1986 | Beethoven Piano Sonatas, Volume I: Moonlight / Pathetique / Appassionata | Beethoven; John O’Conor | | 1 |
| 1987 | Beethoven Piano Sonatas, Volume II: Waldstein / Tempest / Les Adieux | Beethoven; John O’Conor | | 1 |
| 1989 | Beethoven Piano Sonatas, Volume III: Op. 31 no. 1 / Op. 31 no. 3 “Hunt” / Op. 28 “Pastorale” | Beethoven; John O’Conor | | 1 |
| 1989 | Beethoven Piano Sonatas, Volume IV: Op. 2 no. 1 / Op. 2 no. 2 / Op. 2 no. 3 | Beethoven; John O'Conor | | 1 |
| 1990 | Nocturnes of John Field | John Field; John O’Conor | | 3 |
| 1990 | Piano Concertos no. 21 & no. 27 | Wolfgang Amadeus Mozart; John O’Conor, Scottish Chamber Orchestra, Sir Charles Mackerras | | 1 |
| 1990 | Beethoven Piano Sonatas, Volume V: Op. 10 no. 1 / Op. 10 no. 2 / Op. 10 no. 3 / Op. 26 “Funeral March” | Beethoven; John O’Conor | | 1 |
| 1990 | Trout Quintet / Quartet in A minor | Schubert; Cleveland Quartet, James VanDemark, John O’Conor | | 1 |
| 1991 | Beethoven Piano Sonatas, Volume VI: Op. 109 / Op. 110 / Op. 111 | Beethoven; John O’Conor | | 1 |
| 1991 | Piano Concertos nos. 19 & 23 / Rondo | Mozart; John O’Conor, Scottish Chamber Orchestra, Sir Charles Mackerras | | 1 |
| 1992 | Piano Concerto no. 17 & no. 24 | Mozart; John O’Conor, Scottish Chamber Orchestra, Charles Mackerras | | 2 |
| 1992 | Beethoven Piano Sonatas, Volume VII: Op. 14 nos. 1 & 2 / Op. 49, nos. 1 & 2 / Op. 54 / Op. 78 / Op. 79 | Beethoven; John O’Conor | | 1 |
| 1992 | Sonatas and Nocturnes | John Field; John O’Conor | | 1 |
| 1993 | Piano Concertos No. 20 & No. 22 | Mozart; John O’Conor, Scottish Chamber Orchestra, Sir Charles Mackerras | | 1 |
| 1993 | Impromptus & Waltzes | Franz Schubert; John O’Conor | | 1 |
| 1993 | Beethoven Piano Sonatas, Volume VIII: Op. 90 / Op. 101 / Op. 106 “Hammerklavier” | Beethoven; John O'Conor | | 1 |
| 1994 | Beethoven Piano Sonatas, Volume IX: Op. 7 / Op. 22 / Op. 27 no. 1 | Beethoven; John O’Conor | | 1 |
| 1994 | Piano Concertos no. 2 & no. 3 | Field; John O’Conor, Charles Mackerras, Scottish Chamber Orchestra | | 1 |
| 1995 | Autumn Songs: Popular Works for Solo Piano | John O’Conor | | 1 |
| 1995 | Moments Musicaux / Sonata In A Major | Schubert; John O'Conor | | 1 |
| 1996 | Bagatelles | Beethoven, John O'Conor | | 1 |
| 2007 | Piano Concertos Nos. 2 & 5 “Emperor” | Beethoven; John O’Conor, London Symphony Orchestra & Andreas Delfs | | 1 |
| 2008 | Piano Concertos Nos. 1, 3 & 4 | Beethoven; John O’Conor, London Symphony Orchestra & Andreas Delfs | | 1 |
| 2016 | Diabelli Variations | Beethoven; John O’Conor | | 2 |
| 2016 | Sonatas | Joseph Haydn; John O’Conor | | 1 |
| 2019 | Piano Sonatas, Vol. 2 | Haydn; John O’Conor | | 1 |
| 2021 | Complete Cello Sonatas 1–5 | Beethoven; Ailbhe McDonagh, John O’Conor | | 1 |
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